71006781782 has 16 divisors (see below), whose sum is σ = 106723874592. Its totient is φ = 35432221440.

The previous prime is 71006781761. The next prime is 71006781827. The reversal of 71006781782 is 28718760017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2358182 + ... + 2388102.

It is an arithmetic number, because the mean of its divisors is an integer number (6670242162).

Almost surely, 2^71006781782 is an apocalyptic number.

71006781782 is a deficient number, since it is larger than the sum of its proper divisors (35717092810).

71006781782 is a wasteful number, since it uses less digits than its factorization.

71006781782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32263.

The product of its (nonzero) digits is 263424, while the sum is 47.

The spelling of 71006781782 in words is "seventy-one billion, six million, seven hundred eighty-one thousand, seven hundred eighty-two".